PMID- 33962519
OWN - NLM
STAT- MEDLINE
DCOM- 20210818
LR  - 20210818
IS  - 2041-3033 (Electronic)
IS  - 0954-4119 (Linking)
VI  - 235
IP  - 8
DP  - 2021 Aug
TI  - Low velocity oxy fuel spraying of hydroxyapatite coating on a multifunctional UNS 
      S31254 austenitic stainless steel.
PG  - 958-972
LID - 10.1177/09544119211015770 [doi]
AB  - Artificial material such as stainless steel (SS) is widely used for orthopaedic 
      applications owing to its superior properties, ease of fabrication and lower 
      cost. However, in the body environment, stainless steel can leach toxic elements 
      such as nickel and chromium. To prevent this, a hydroxyapatite (HAp) coating 
      having chemical characteristics very similar to the human bone was deposited on a 
      medical-grade UNS S31254 austenitic stainless steel by a Low-velocity oxy-fuel 
      spray gun (LVOF). The coating was characterised by using a field emission 
      scanning electron microscope (FESEM), X-ray diffractometer (XRD) and Fourier 
      transform infrared spectroscope (FTIR). The adhesion strength, microhardness and 
      corrosion behaviour were studied using the Tensometre, Vickers microhardness 
      tester and potentiodynamic polarisation with electrochemical impedance 
      spectroscope. The bacterial adhesion and bioactivity of the coating were also 
      evaluated. The LVOF sprayed HAp coating has shown better corrosion resistance, 
      higher bioactivity and higher hardness than the uncoated steel. The presence of 
      tricalcium phosphate, octa-calcium phosphate (OCP) and tetra-calcium phosphate 
      (TTCP) was found in the coating. LVOF sprayed HAp coating is also found suitable 
      in lowering the bacterial adhesion on the steel substrate.
FAU - Tiwari, Srikant
AU  - Tiwari S
AUID- ORCID: 0000-0003-2705-2778
AD  - Department of Mechanical Engineering, Motilal Nehru National Institute of 
      Technology Allahabad, Prayagraj, Uttar Pradesh, India.
FAU - Mishra, Suryanarayan B
AU  - Mishra SB
AUID- ORCID: 0000-0002-2014-4613
AD  - Department of Mechanical Engineering, Motilal Nehru National Institute of 
      Technology Allahabad, Prayagraj, Uttar Pradesh, India.
LA  - eng
PT  - Journal Article
DEP - 20210507
PL  - England
TA  - Proc Inst Mech Eng H
JT  - Proceedings of the Institution of Mechanical Engineers. Part H, Journal of 
      engineering in medicine
JID - 8908934
RN  - 0 (Coated Materials, Biocompatible)
RN  - 12597-68-1 (Stainless Steel)
RN  - 91D9GV0Z28 (Durapatite)
SB  - IM
MH  - Coated Materials, Biocompatible
MH  - Corrosion
MH  - *Durapatite
MH  - Hardness
MH  - Humans
MH  - *Stainless Steel
OTO - NOTNLM
OT  - Hydroxyapatite
OT  - LVOF spraying
OT  - bacterial adhesion
OT  - bioactivity
OT  - corrosion
EDAT- 2021/05/09 06:00
MHDA- 2021/08/19 06:00
CRDT- 2021/05/08 05:36
PHST- 2021/05/09 06:00 [pubmed]
PHST- 2021/08/19 06:00 [medline]
PHST- 2021/05/08 05:36 [entrez]
AID - 10.1177/09544119211015770 [doi]
PST - ppublish
SO  - Proc Inst Mech Eng H. 2021 Aug;235(8):958-972. doi: 10.1177/09544119211015770. 
      Epub 2021 May 7.